A method of color grading and color correction, the method includes: generating data of image processing results obtained by performing various types of color grading and color correction in a profile form, and storing the same; and applying the image processing result to a target image by using profile information of color grading and color correction selected from the stored profiles.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of color grading and color correction, the method comprising: generating data of image processing results obtained by performing color grading and color correction in a profile form, and storing the same; and applying the image processing result to a target image by using profile information of color grading and color correction selected from the stored profiles, wherein representing a color value is performed by using a combined component generated by combining color components according to a color model based on a greatest common divisor principle.
2. The method of claim 1 , wherein the generating of the data includes generating an n color table chart (NCTC) corresponding to a look-up table including the color value represented by using the combined component.
3. The method of claim 2 , wherein the generating of the data and storing the same further includes: applying image processing of color grading and color correction to a sample image; generating a profile of a color value of an image transformed by the image processing; and establishing a database of the types of the color grading and color correction, and profile information in association thereto.
4. The method of claim 3 , wherein the profile information includes a color value transformed by a color value of the NCTC and by the image processing.
5. The method of claim of 1 , wherein the applying to the target image includes: changing a color value of the target image such that the color value of the target image is represented by using a color value of the combined component; searching in the database for a profile in association with the selected color grading and color correction that is to be applied to the target image and which is generated and stored as the data; and obtaining the target image to which the selected color grading and color correction is applied by transforming the color value of the target image according to profile information of the found profile.
6. The method of claim 1 , wherein in the representing of the color value, a color of an image pixel is represented by using a combined component obtained by combining a plurality of color components, and a color component that is remained afterward.
7. The method of claim 1 , wherein the combination is performed by combining from each other color components having a color value of a common numeral range in each color component.
8. The method of claim 1 , wherein the color value of the combination component is represented in a color model including an RGB color model and a CMYK color model.
9. The method of claim 6 , wherein in the RGB color model, seven charts are used: for an RGB combined component in which three color components of an R component, a G component, and a B component are combined; for an RG combined component, a GB combined component, and a BR combined component in which two color components are combined; and for each color component of a red component, a green component, and a blue component.
10. The method of claim 6 , wherein in the CMYK color model, 15 charts are used: for a CMYK combined component in which four color components of C, M, Y, and K components are combined; for CMY, CMK, CYK, and MYK combined components in which three color components are combined; for CM, CY, CK, MY, MK, and YK combined components in which two color components are combined; and for each color component of a cyan component, a magenta component, a yellow component, and a black component.
11. The method of claim 7 , wherein each chart includes 256 patches stepwisely representing a color according to a value of a color component constituting a combined component in association with each chart.
12. The method of claim 8 , wherein each chart includes 100 patches stepwisely representing a color according to a value of a color component constituting a combined component in association with each chart.
13. The method of claim 3 , wherein the transformed color value of the target image is generated by adding at least one color value from a group including a transformed color value by an RGB combined component, a transformed color value by any one of RG, GB, and BR combined components, and a transformed color value by any one of remaining red, green, and blue components.
14. The method of claim 1 , wherein the target image is a file having a format in which color information is not changed by the image processing.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 31, 2018
April 14, 2020
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